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What is the relationship between enthalpy and internal energy?

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Question: What is the relationship between enthalpy and internal energy?

Options:

  1. H = U + PV
  2. H = U - PV
  3. H = U * PV
  4. H = U / PV

Correct Answer: H = U + PV

Solution: 

The relationship is given by the equation H = U + PV, where H is enthalpy, U is internal energy, P is pressure, and V is volume.

What is the relationship between enthalpy and internal energy?

Practice Questions

Q1
What is the relationship between enthalpy and internal energy?
  1. H = U + PV
  2. H = U - PV
  3. H = U * PV
  4. H = U / PV

Questions & Step-by-Step Solutions

What is the relationship between enthalpy and internal energy?
  • Step 1: Understand that enthalpy (H) and internal energy (U) are both measures of energy in a system.
  • Step 2: Know that enthalpy includes internal energy plus the energy related to pressure and volume.
  • Step 3: Remember the equation that connects them: H = U + PV.
  • Step 4: In this equation, P stands for pressure and V stands for volume.
  • Step 5: This means that to find enthalpy, you take the internal energy and add the product of pressure and volume.
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